Excavator and conveyer for contractors&#39; use



April 5, 1932. c. L. cAMP EXCAVATOR AND GONVEYER FOR CONTRACTORS USEFiled Dec. 1', 1930 s Sheets- Sheet 1 670/6/7136 Z am o INVENTOR ATTOR YApril 5, 193.2. CAMP 1,852,200

EXCAVATOR AND CONVEYER FOR CONTRACTORS USE Filed Dec. 1, 1930 3Sheets-Sheet 2 G/arewce L, Cam 0 INVENTOR'- ATTO EY A ril 5, 1932. CAMP1,852,200

EXCAVATOR AND CONVEYER FOR CONTRACTORS' USE Filed Dec. 1, 1930 3Sheets-Sheet 3 3a vp x769 L. 4

6/0,? INVENTOR BY r I M A'ITQRN Patente'd Apr. 5, 1932' UNITED STATESPA'lIENT' OFFICE CLARENCE LIGAIP, OI SPOKANE, WASHIIIGTON EXGAVATQB AND,COHYEYEB FOR CONTRACTORS USE I Application fled December 1, 1980. Serialin. 489,259.

The purpose and object of my invention is to provide a power drivenwheeled machine and adapted to be ridden and manipulated by the operatorof the same and having means provided for the utilization of a pluralityof bucket units, each of which may be attached and detached from theautomotive unit,

quickly and at the will of-the operator; meansalso beingrprovided forthe raising of the atv taching up, and be dumped without interferencefrom the dump bank or the dump pile. A further object in raising thebucket 1s to permit the climbing of arelatively steep incline withhavinga simple means for the raisin and lowering within limited ranges of theame and bucket, or dipper that 1s carried on its forward end, to whichthe buckets are to be attached and detached.

- Heretofore it has been necessary, in power.

actuated shovels, to have a single dipper afl'manipulatively mountedupon the boom which was used for loading purposes, the dip Ber beingmanipulated upon-the boom and eing used for the shovelin o fmaterial tobe handled over the bank or 1nto independent '35 conveying mechanisms.

v My device 1s intended as alight duty power driven shovel which mayheused in rock quarries for' the feeding of crushers; it may be'used inthe digging of baseinents, the making of cuts and fills, the cleaning upcircadways, as a back filler for trench work, and in sewer digging,wherein a plurality of buckets, or dippers may be used and filled byhand or otherwise, and when filled. be picked up by the power drivenunit, elevated andtransported to the dump and returned --to the'point ofuse; at which time the same ,is detached from the power driven unit andanother dumped.

ame to the bucket, in order that' the bucket may be transported, whenpickedicked u' and and p p bled device.

I have shown in my drawings thetractor as being a three wheeled tractor,but I do not wlsh to be limited to three wheels, as a greater number ofwheels or a smaller diameter .imay be used'or self laying track orwheeled support may be utilized with equal facility. The buckets may beused as .a dipper at the toe of theslope and the bucket be filled by thecrowding of the bucket, or dipper into the toe of the slope of thematerial being handled, w or tobe handled. a One of the objects of myinvention, is to provide a relatively cheap power driven tractor unlt,that may be operated by a single operator and that may be used in anumber a of ways for the eflicient handling of mate-' rials and forvarious purposes.

A further object of my invention consists 1 in providing a power drivenunit, through the use of which, a number of difi'erent up 10 plicationsmaybe made for the handlingof materials and for various purposes. V

A still further-object of my invention consists in providing a simplyconstructed unit comprised ofbut few parts and that gives fullvisibility to the operator of the same and for the handling of theloading and un-,

loading and attaching, or detaching, of the dipper, or bucket, theretowhen .filled or em ty. still further object of my invention consists inproviding a power driven unit having an extremely low center of gravity,to thereby permit its being operated over rela-' tively uneven terrainwithout the hazard of the. same tipping over, with the incident hazardsthat result to the operator and other workmen disposed thereabout. 1 I

With these and incidental objects-in view, the invention consists incertain novel feao tures of construction and combination of 'parts, theessential elements of which are set Laccompany and form a part of thisspecification.-

In-the drawings: Fig. 1 is a sect onal, side view of; the assem- 2is atop, plan view of the assembled device.

Fig. 3 is a front, end view, of the assembled device. In Figs. 1, 2 and3, the dipper, or bucket, is shown in loading and attached position.

the bucket.

Fig. 6 is a sectional, end view, of the meek-- anism illustrated in Fig.5, the same being taken on line 6-6 of Fig. 5,-looking in the directionindicated.

' di per,

. bring I ,wheels 4 and 5 that are secured to the outer directionindicated.

Fig. 7 is a sectional, end view, of the mechanism illustrated in 5, thesame being taken on line 77 of ig. 5, looking in the Fig. 8 is aperspective, end view, of the or bucket. 1g. 9 is an inverted, plan viewofthe mechanism illustrated in Fig. '8, the same being anunderside',-plan view, of the bucket, or dipper.

Fig. 10 is a side view of the bucket or dipper and of the head, disposedupon the outer end of-the boom andillustrating the dipper, or bucket, inplace and attached to the front end of the boom. 7

Fig. 11 is a sectional, side view of the bucket and of theattachin'gmechanism.

Fig. 12 is a top,"plan view. of the dipperor bucket "and of theattaching means for securing the same to the boom.

' Like reference characters refer to like parts throughout the severalviews I referably forfn my device of a fabricate frame comprised of siderails 1 and 2 and secure the-same. to an axle housing 3.

' The side frame members being spaced apart the. greatest amount at theforward end, to the same in close proximity to the ends of the axlesthat are disposed within the axle housing 3. Offsets 6 and -7 aredisposed within the side frames to bring the rearward 4 ends 8 and 9closer together than at the for- I. tion to the axle Ifdi'sposed is soarranged through ward ends with the rear ends 8 and 9 of the side framesbeing ,parallelly disposed toeach other, v

A prime mover 10, as an internal combustion motor, is mounted within theframe and 7 suitable driving shafts and associated eoacting gears toimpart rotawithin the side .walls 12 and 13 ofzthe frame secured to thethe prime mover and the wheels.

axle. A transmission gear box 14 is disposed within the frame 15 toprovide suitable means for the changing of the speed.- ratios between A.shift lever 15A is provided adjacent the seat 16 upon which the o ratorridesto manipulate the A p ot wheel 17 is disposed at the.-

' are disposed at upon which the-operator is normally positioned. Abifiircated boom 19 is hingedly secured to a bracket 20 disposed uponthe under-' ;side of the frame, the same being hingedly secured theretoabout a journal shaft 21. The bifurcated boom is composed of side wallmembers 22 and 23 and are spaced apart the greatest amount at theforward end terminating in a yoke- 24: secured to the forward end of theside wall members 22 and 2 3 of the boom.

I use a plurality of bucket members 25, the same being comprised of anopen ended memher having a cutting edge 26 disposed at its forward endhaving dipper teeth 27 disposed, upon the under side of the forward endsto reinforce the same and to eliminate the fre-* quent reconditioning.of the buckets. Side walls 28 and 29 are disposed at either side of -Tthe bucket with a rear wall 30 connecting the .the side wall membersandthe rear wall members; with a reinforcing bar 32 running around therear and extending well up from the rear alon the side walls andimmediately 33 and 34 ofthe bucket to posed sides of the hue ets. T ecorners of the bucket are rounded, as illustrated at 36A and 37 tofacilitate attachment of the boom to the bucket. Receiving notches 38and 39 are disposed at the outer end of the side members and 36 intowhich the locking. pins a 33 and'34 are made to precisely engage whenthe boom is crowded along either side of the bucket members. When thepins are made to engage within the sockets 38 and'39 the lock inglatches 40 and 41 are crowded over the notch and pin to thereby maintainthe same in precise place and ppsition within the notch. Simultaneouslytherewith the lockin pawl 42 is made .to engage the 3pm; side 0 ,therear wall" 30 of the bucket The-rear wall 30 of the bucket 43 is made toen age directlyupon the knees 44 and 45 of the irame of the boommembers, to thereby maintain the bucket rigidly positioned within theboom. The ins 33 and 34 are disposed 'well to the rear 0 the center ofthe bucket, in may be free tilting when raised from the normalsupporting surface at which the locking pawl 42 is disengaged from thebucket. The locking pawl 42 the lever 45A and the lever-.45 is-rockablpositioned about the journal pin 46 to whic I the locking latch'40 issecured. The pawl 42 being near the center about whic order, that thevbucket is secured to. 3

the bar rocks is detached from the upper side A of the bucket in advanceof the releaseof the locking latch from the pins 38 and 39 so that whenthe bucket is raised and the locking latch is unlatched the bucket willtilt and its connects the foot lever with a bell crank 52 thatmanipulates a gear shift with the trans= mission case 14 and when somani ulated; a power shaft 53 is power rotated. v sprocket 54 is mountedupon the. shaft and a chain 55 is trained about the sprocket 54 andabout the sprocket 5.6; the sprocket 56 is fixedly posi:

tioned upon the shaft 57 and hoisting cables 60 and 61 are ,trainedabout the respective hoisting drums so that when'the foot lever ismanipulated in one direction, the drums are rotated and the cables arewound or released about the drums. The lower end of the cables aresecured to brackets 62 and 68 that are secured to the boom frame andwhen the cable' drums are power-driven the boom is raised a and whenreleased the boom is lowered While I have shown the hoist, for the,boom, to be made through the use of hoisting drums and cables, I do notwish to be limited in the application of the device to a drum and cablehoist as the hoisting may be made through the use of a piston and pistonrod actuated. within a cylinder through the use of steam, compressedair, or a noncompressible fluid, as the operating medium. A hydraulichoist may befound the most satisfactory on the larger machines, or uponmachines that are to be subjected to the'heaviest forms of work. a Whereextremely heavy loads are to be carried within the respective buckets, acoun-- terweight 64 is placed uponthe rear of the side frafne members.Ofi-set bands are propin' disposed throujghthe yoke a link connectingeach of the locking latches with said journal pin, a bucket adapted tofit within the yoke, a reinforcing band disposed about the sides andback of the bucket, a pin extendin outwardly from each side of the band,sa-i pins adapted to fit within the receiving notches a plurality oflocking pawls adapte to engage with the rear portion of the'relnforcingband, and means for actuatihg the lockin latches to thereby remove thebucket from t eyoke; o 7 i 2. Apparatus as in claim 1 where means areassociated with the engine for elevating and lowering the boom asdesired.

3. Apparatus as in claim 1 wherein the I means for actuating the lockinglatches comprise a lever secured to the journal pin and wherein amanually operable hand lever is connected to the first mentioned leverby a link. *1

' CLARENCE L. CAMP.

.vided in the side frame members in order to' I mamtain the center ofgravity of the operating mechanism as low as possible.

While v the form of mechanism herein shown and described isadmirablyadapted to'fulfill the objects primarily stated, it is to beunderstood that it is not intendedto confine the invention. to the oneform of embodiment herein shown and described, as it issus- 55 ceptibleof embodimentin variousforms, all coming within the scope of the claimswhich follow. I What I claim is:

1. A scraper attachment for traction en-s 'gines comprising a boompivoted to the 11111 derside of the engine, a yoke secured to the freeend of the boom, a receiving notch dis? posed within each side of theyoke, a locking latch slidably disposed upon each side of the yoke,directly above the notches, a journal

